That's British Airways for you. It doesn't matter what you do, they won't acknowledge it. If there are any crew who might think that working during the strike would be to their advantage for any future promotion opportunities should really think again.
I agree entirely. I've never expected to be recognised or acknowledged by BA for coming in to work during the strike. Nor have I wanted to be (other than perhaps being offered the opportunity to work up instead of having to work under someone who has been with the company for two weeks - I have to be honest and say I don't care what they did in a past life).